[issue47178] Improve the implementations of Sequence.index and MutableSequence.extend in collections.abc

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Marking as closed because the changes are incorrect.  See the comments in the 
PR.

--
assignee:  -> rhettinger
nosy: +rhettinger
resolution:  -> rejected
stage:  -> resolved
status: open -> closed

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[issue47178] Improve the implementations of Sequence.index and MutableSequence.extend in collections.abc

[Géry]

New submission from Géry :

This P.R. will make the following changes to the `collections.abc` module:

- simplify the implementation with slicing in function `Sequence.index`.
- remove an unnecessary copy of `self` when a sequence extends itself in 
function `MutableSequence.extend`.

--
components: Library (Lib)
messages: 416415
nosy: maggyero
priority: normal
pull_requests: 30285
severity: normal
status: open
title: Improve the implementations of Sequence.index and MutableSequence.extend 
in collections.abc
type: enhancement
versions: Python 3.10, Python 3.11, Python 3.9

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